I thought all diesels were designed so they could set at idle speeds for long periods without harm to the motor, but reading several topics here it sounds as though this isn't the case, at least for the psd x model.
My job requires me to make frequent stops and leave the engine running for 10-15 minutes at a time (running the A/C to keep the interior cool). Will I do harm to the engine?
If so, should I install and AIS unit so I can set the idle speed higher? From what I've read this "helps" the diesel engine when idling???
Also, from what I'm reading here I should also consider adding the turbo lifesaver unit. If I'm turning off the engine before the turbo cools off there could be damage?
Responses greatly appreciated!
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2004 Excursion 4X4 Limited 6.0 PSD, Mineral Gray Metallic, badged, Tow Mirrors, Rear DVD with wireless sound, 3.73 ratio, limited-slip differential, Rancho steering stabilizer, Hellwig rear anti-sway bar, Air-Lift rear springs.
Towing a 2003 - 32' Fleetwood Pride travel trailer with slide-out.
2003 Kubota BX2200 diesel tractor, with front-end loader, backhoe. Boy, can I dig some holes in the yard with this toy!
I'm sure some of the others will chime in on this....
The way I understand it is, when you let the PSD idle, the exhaust valves will cool considerably. Then, any unburnt fuel will condense and build up gooy diesel sludge around the valve stem and eventually cause the valve to hang open.
So, here is a couple of links to look at...
Go HERE
And SmokeyWren had comments
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... what RPM should I maintain when the truck is sitting? differnt from summer to winter?
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In summertime, you need a minimum idle RPM of about 1,100. The colder the weather, the higher the RPM required to maintain EGT of 275 or more. If you don't have a pyrometer (EGT gauge) to be sure your EGT doesn't go below 275, then in the Armadillo area I'd use 1,300 RPM in the wintertime with temps down to about 20F., and 1,500 RPM when temps are colder than about 20F. Those guys up in the deep freeze have to use as high as 2,000 RPM when it's really cold. [img]/ubbthreads/images/graemlins/eek.gif[/img]
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...or should I rely on the automatic idle adjustment built into the late model trucks?
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The elevated idle that's part of the cold ambient pkg (CAP) in '99-up PSDs does not elevate the RPM enough to prevent wet stacking, plus it stops elevating the idle when the oil gets warm. So it's not at all good enough to use for extended idle.
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Do a search on "wet stacking" and you will get lots of hits!!!
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I thought all diesels were designed so they could set at idle speeds for long periods without harm to the motor, but reading several topics here it sounds as though this isn't the case, at least for the psd x model.
My job requires me to make frequent stops and leave the engine running for 10-15 minutes at a time (running the A/C to keep the interior cool). Will I do harm to the engine?
If so, should I install and AIS unit so I can set the idle speed higher? From what I've read this "helps" the diesel engine when idling???
Also, from what I'm reading here I should also consider adding the turbo lifesaver unit. If I'm turning off the engine before the turbo cools off there could be damage?
Responses greatly appreciated!
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I was under the same impression also. I'm using my (ordered) X to pull my race trailer which I used to camp in at the track. I was planning on sleeping in the X and keeping it running at night. I could use the air conditioning when it is really hot and humid. Now I'm finding out that I really shouldn't do that. I guess I should look into the idle module. [img]/ubbthreads/images/graemlins/shrug.gif[/img]
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'04 Mineral Grey Excursion LTD. 6.0 PSD
Having the AIC is a good idea, but also keep in mind that when people here say "you shouldn't do that" they are talking about something that might make the difference between rebuilding your engine at 325,000 miles or doing it at 330,000 miles. Yeah, you shouldn't do that, but it's not even remotely likely to become some big problem with your truck if you do. And a lot of the effects of it can be reduced with a good hard run on the engine after the extended idle.
You shouldn't idle for extended periods, you shouldn't exceed your GVWR, you should change your oil every 5000 miles or less, you should drain your fuel filter housing once a month.... now go look at a fleet of trucks in the oil fields, or up in Alaska, or down at your local large building contractor and tell me how many of those rules they obey. But their trucks all have 180,000 miles on them and are still going strong. These suckers are a lot tougher than you'd get the impression from all the overly-attentive-owner posts around here!
Duncan
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The 1997 F250HD Crewcab: Picture
The 2000 XLT Excursion <font color="red">(SOLD)</font>: Picture
The 2003 F250 Crewcab 6.0L: Web page
The 6.0L Bible: Web page
The 6.4L Bible: Web page
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These suckers are a lot tougher than you'd get the impression from all the overly-attentive-owner posts around here!
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How true Duncan! Especially the part about "overly-attentive-owner posts", which I dare say, includes me. [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]
You need to keep your EGT at about 275*F. In the summer in Arizona, this is not a problem at idle. In Alaska in January, idle won't do this.
If you are concerned at all, run a fuel additive that has a detergent in it. The extra detergent will go a long way to reducing any possibility of problem deposits.
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These suckers are a lot tougher than you'd get the impression from all the overly-attentive-owner posts around here!
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How true Duncan! Especially the part about "overly-attentive-owner posts", which I dare say, includes me. [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]
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I gladly count myself in that crowd too, I just try not to obsess over stuff. Then again, I'm the guy that takes pictures of all kinds of weird stuff on the truck. A frequent line from my wife: "do you need to use the computer now, to share that new picture with all your friends?" heh.
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The 1997 F250HD Crewcab: Picture
The 2000 XLT Excursion <font color="red">(SOLD)</font>: Picture
The 2003 F250 Crewcab 6.0L: Web page
The 6.0L Bible: Web page
The 6.4L Bible: Web page
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One sparks, one glows. Why do you need a pic to describe it? [img]/ubbthreads/images/graemlins/biggrin.gif[/img]
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True, though if the only glow plug you've ever seen (like me) was in the head of a Cox .049 engine, you'll be pretty amazed at how hot a real diesel glow plug gets!
Duncan
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The 1997 F250HD Crewcab: Picture
The 2000 XLT Excursion <font color="red">(SOLD)</font>: Picture
The 2003 F250 Crewcab 6.0L: Web page
The 6.0L Bible: Web page
The 6.4L Bible: Web page
Before I knew how to use a multimeter, that is how I tested the glow plugs in my VW Rabbits. Worked well. [img]/ubbthreads/images/graemlins/biggrin.gif[/img] I know how hot they get when I accidently touched one [img]/ubbthreads/images/graemlins/blush.gif[/img]. (My younger years![img]/ubbthreads/images/graemlins/crazy.gif[/img])
Have a great day,
John [img]/ubbthreads/images/graemlins/laugh.gif[/img]
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2000 Excursion Limited PSD 4X4 Dark Satin Green/Medium Parchmant Born 7/00 In-Service 10/00 All Factory Options except Transfer Skid Plate
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Having the AIC is a good idea, but also keep in mind that when people here say "you shouldn't do that" they are talking about something that might make the difference between rebuilding your engine at 325,000 miles or doing it at 330,000 miles. Yeah, you shouldn't do that, but it's not even remotely likely to become some big problem with your truck if you do. And a lot of the effects of it can be reduced with a good hard run on the engine after the extended idle.
You shouldn't idle for extended periods, you shouldn't exceed your GVWR, you should change your oil every 5000 miles or less, you should drain your fuel filter housing once a month.... now go look at a fleet of trucks in the oil fields, or up in Alaska, or down at your local large building contractor and tell me how many of those rules they obey. But their trucks all have 180,000 miles on them and are still going strong. These suckers are a lot tougher than you'd get the impression from all the overly-attentive-owner posts around here!
Duncan
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I agree!! [img]/ubbthreads/images/graemlins/smokin.gif[/img]
How many truckers idle overnight just to keep warm or cool in their sleepers.
Back the mid 80's when I worked at a trucking firm, in the bitter cold, we would let the tractors idle all night to keep them warm. However, the lead mechanic would have me go into each truck for 2 minutes every hour to raise the rpms to 1500 to burn up the extra fuel in the engine. I did what I was told but I did not understand why.
John [img]/ubbthreads/images/graemlins/laugh.gif[/img]
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2000 Excursion Limited PSD 4X4 Dark Satin Green/Medium Parchmant Born 7/00 In-Service 10/00 All Factory Options except Transfer Skid Plate
Duncan in the summer months I feel he would need to idle up to around 1,100 rpm if for nothing else to keep the batteries charged. There are two fan motors and what ever else he wants to run. It is to buy batteries or fuel. Now in the colder months it does need to be up in the 1,500 + rpm range depending on ambient temperatures. IMHO. If he gets some gauges then he will know for sure. Should he see some white smoke he definitely needs to get the idle up IMHO again. Yep they are tough buggers.
Just my thoughts and .02 c worth . [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]
- [img]/ubbthreads/images/graemlins/crazy.gif[/img] - Ed
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<font color="red">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~</font> SMILES and the best to all**Ed-<font color="red">RETIRED</font>**OINKING-BILGE-RAT <font color="red">FREEDOM IS NOT FREE ! ! !</font>
2005 LTD. X PSD 2WD FIBERGLASS RUNNINGBOARDS; SUNVISOR: REAR DEFLECTOR
<font color="00FF00">BENEFACTOR**<font color="red">NRA</font>**<font color="red">LIFER</font>**<font color="red">TX.ST.RIFLE ASSOC</font>**<font color="red">GOA</font>**<font color="00FF00">MEMBER</font>**<font color="00FF00">NRA/ILA</font>**<font color="red"> I VOTE ! DO YOU ? </font>**QUACK*QUACK ! ! !
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